Quarterly report pursuant to Section 13 or 15(d)

Convertible Instruments and Accrued Interest - Outstanding Balance (Details)

v3.22.1
Convertible Instruments and Accrued Interest - Outstanding Balance (Details) - USD ($)
$ in Thousands
Feb. 28, 2022
May 31, 2021
Debt Instrument [Line Items]    
Convertible notes payable outstanding principal $ 38,319 $ 70,500
Less: Unamortized debt discount and issuance costs (2,672) (7,753)
Convertible notes payable, net 35,647 62,747
Accrued interest on convertible notes 4,857 2,007
Outstanding convertible notes payable, net and accrued interest 40,504 64,754
Long-term Convertible Note - November 2020 Note    
Debt Instrument [Line Items]    
Convertible notes payable outstanding principal   13,500
Less: Unamortized debt discount and issuance costs   (1,204)
Convertible notes payable, net   12,296
Accrued interest on convertible notes   1,258
Outstanding convertible notes payable, net and accrued interest   13,554
Long-term Convertible Note - April 2, 2021 Note    
Debt Instrument [Line Items]    
Convertible notes payable outstanding principal 9,819 28,500
Less: Unamortized debt discount and issuance costs (662) (3,232)
Convertible notes payable, net 9,157 25,268
Accrued interest on convertible notes 2,285 447
Outstanding convertible notes payable, net and accrued interest 11,442 25,715
Long-term Convertible Note - April 23, 2021 Note    
Debt Instrument [Line Items]    
Convertible notes payable outstanding principal 28,500 28,500
Less: Unamortized debt discount and issuance costs (2,010) (3,317)
Convertible notes payable, net 26,490 25,183
Accrued interest on convertible notes 2,572 302
Outstanding convertible notes payable, net and accrued interest $ 29,062 $ 25,485